Youngest child with double-hand transplant throws opening ball at Major League baseball game

Just one year after he underwent a double-hand transplant, nine-year-old Zion Harvey has pitched a ceremonial first ball at a baseball game.

Zion - the youngest child to undergo such an operation - threw the ball to Orioles outfielder Adam Jones at Camden Yards.

Zion, from Owings Mills in Philadelphia, had his hands and feet amputated when he was two years old after suffering from a serious infection.

The transplant was carried out last summer at the Children's Hospital of Philadelphia. Zion has since undergone intensive physical therapy sessions, working on skills that included throwing a baseball.

Other goals set by Zion included hanging from the monkey bars, picking up his little sister, and throwing a football.